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Ramadi attack

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Ramadi attack

Iraqi security forces withdraw from the Anbar state capital, Ramadi, in defeat on Sunday, 17 May (AP)

AP

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Ramadi attack

The last remaining Iraqi security forces defending their headquarters against Isis in the eastern part of Ramadi on 14 May

Reuters

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Ramadi attack

Civilian belongings can be seen in an abandoned truck during fighting in Ramadi

Reuters

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Ramadi attack

Civilians fled Ramadi as Isis advanced

Reuters

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Ramadi attack

Thousands of civilians fled the Isis advance in Ramadi

AP

The authenticity of the video has not yet been solidly verified, but bears resemblance to previous hostage videos released by the group, and has been shared widely by the group's supporters online.

The video could not have come at a worse time for the Egyptian government, who are currently preparing to inaugurate an $8.5 billion extension to the Suez Canal on 6 August, a huge project that is the centrepiece of President Abdel Fattah al-Sisi's plans to revitalise the country's economy.

The release of the video came as Egypt plans to officially open a huge new extension to the Suez Canal